The role of tourism to the economy of Bali and Indonesia can be seen from the increase in tourist arrivals. The study results showed that if tourism is represented by the trade, hotels and restaurants sector, tourism contribution to the economy of Bali is 27.82% in 2010 to be 31.35% in 2014. If tourism represented by the tertiary sector (services sector), contribution of tourism to the economy is 65.28% in 2010 to be 68.28% in 2014. Tourism is represented trade, hotels and restaurants sector, the number of labor who work in tourism is 571,274 people (26.24%) in 2010 to be 628,585 people (27.64%) in 2014. If tourism is represented the tertiary sector, the number labor who work in the tourism is 1,046,530 people (48.96%) in 2010 to be 1,178,201 people (51.81%) in 2014.

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The research objective was to formulate a sustainable dryland management strategy in Buleleng Regency, Bali Province. The results showed that the effective strategies were namely: (1) Utilizing available dryland to increase the quantity and quality of agricultural production; (2) Utilizing the research results of research institutes of the Ministry and University related to dryland; (3) Attracting investors to invest in the use of dryland, strengths-threats (ST) strategies; (4) Rearranging of inheritance of agricultural land to avoid narrowing agricultural land owners; (5) Application of agricultural technology 4.0 to attract millennials to work in agriculture; the weakness-opportunity (WO) strategy, (6) Increasing the productivity of dryland by applying technology produced by ministerial research institutes and University, (7) Increasing the availability of facilities and infrastructure to support dryland development, such as making jubang, drip irrigation, etc. (8) Increasing capital and facilitating access to capital, and market networks and partnership systems; The WT strategy, (9) Implementing the Perpetual Land Law to prevent land conversion for non-agricultural purposes, and (10) Improving the quality of farmers' human resources through trainings, so that farmers have the ability to take advantage of existing technology.

The Covid-19 pandemic that broke out in 2020, caused foreign tourist visits to Bali and Indonesia to decrease drastically. Sectors related to tourist arrivals such as various service sectors, agriculture and small and mediumsized industries experienced a decline in demand, followed by a decrease in added value for sectors related to tourism. The purpose of the study is to analyze the impact of the Covid-19 pandemic on the economy of Bali and Indonesia. The research locations are in the Provinces of Bali and Indonesia, using secondary data source from BPS Bali and BPS RI. The data analysis method used descriptive statistics, comparison methods before and after the Covid19 pandemic, and qualitative descriptive. The results of the research was found that impact of the COVID-19 pandemic in 2020 causing the Balinese economy to contract as deep as -9.31% compared to Bali economic growth 2019. The impact of the Covid-19 pandemic on the Indonesian economy, decreased Indonesia's economic growth in 2020 only contracted -2.07% compared to 2019. The novelty of this research is that the Covid-19 pandemic has an impact on reducing Bali and Indonesia economic growth, but the decline of Bali economic growth is more severe than Indonesia economic growth.

One of the efforts to increase soil productivity, fertilization efficiency and yield increase is the application of environmentally friendly fertilization technologies. The purpose of the study was to determine the the growth response and yield of mustard greens to the application of organic fertilizer, and which organic fertilizer gave the highest yield. This research was an experiment in the greenhouse of the Experimental Garden of the Faculty of Agriculture, Udayana University using polybags. The research method used a completely randomized design (CRD), with 3 treatments each with 3 levels, and repeated 4 times so that 36 treatments were obtained. The treatments given were vermicompost fertilizer (KS0 = no vermicompost, KS1 = 5 t/ha, KS2 = 10 t/ha); goat manure (KK0= without goat manure, KK1= 5 t/ha, KS2= 10 t/ha); and organic fertilizers sold on the market (K0 = without organic fertilizer application, K1 = 5 t/ha, K2 = 10 t/ha). Each polybag was filled with 2 plants so that the total plants were 72 plants. Based on the results of the study, it can be concluded that the application of organic fertilizers (compost, vermicompost and goat manure) can increase growth and yield compared to no organic fertilizer application. The application of organic fertilizer 10 tons/ha, gave the highest yield, for a plant height of 35.00 cm; number of leaves 16.25 sheets, 79.29 g, fresh weight and 67.88 g dry weight (compost fertilizer), 34.98 cm, 21.75 sheets, 84.54 g, and 69.72 g (vermicompost fertilizer) , and 35.98 cm, 25.50 sheets, 72.83 g and 61.25 g (goat manure). It is recommended that the cultivation of mustard greens can be done by providing any type of organic fertilizer because it helps growth and yield.